WO2017195100A1 - Module pour système modulaire de contrôle d'érosion de côtes et système modulaire comprenant ledit module - Google Patents

Module pour système modulaire de contrôle d'érosion de côtes et système modulaire comprenant ledit module Download PDF

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Publication number
WO2017195100A1
WO2017195100A1 PCT/IB2017/052682 IB2017052682W WO2017195100A1 WO 2017195100 A1 WO2017195100 A1 WO 2017195100A1 IB 2017052682 W IB2017052682 W IB 2017052682W WO 2017195100 A1 WO2017195100 A1 WO 2017195100A1
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WIPO (PCT)
Prior art keywords
base
module
wing
modular
coupling means
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Ceased
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PCT/IB2017/052682
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English (en)
Inventor
Giuseppe TAMBURRANO
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment

Definitions

  • Module for a modular erosion-control system of coasts and modular system comprising said module
  • the present invention refers to a module for a modular erosion-control system of coasts and a respective modular system comprising one or more modules of the above said type .
  • the invention concerns a module and a modular system of the aforementioned type, which are adapted to counter the erosion of the coasts, for example seacoasts, and adapted to recover sandy sediments suspended in the waves, for example sea waves.
  • the shore line i.e. the point where emerged earth meets water
  • the shore line is the result of incessant sedimentation processes, i.e. the supply of material, for example from rivers, and erosion on the other, i.e. the removal of material, for example by wind and coastal storms .
  • the anthropic factors predominantly responsible for coastal erosion are: hydraulic-forestry applications and land use in catchment basins; concrete-covered embankments and weirs which delay the flow of wash-out products into the drainage channels; water retaining dams for irrigation, drinking and industrial use; the extraction of inert materials from riverbeds; the presence of buildings, roads and other infrastructures near the coastal strip; the presence of port and urban structures hindering the redistribution of sediments carried to the coast by watercourses.
  • the document FR 745 208 A describes a device for defending the coasts, and especially the sea cliffs, from the destructive action of the sea, the device, although designed to have "reduced impact" with respect to traditional breakwaters carried out by means of typical concrete layer, maintains the characteristics of a simple barrier against the destructive force of the sea storms, including stability, in fact the device comprises a base structure which requires to be securely fastened to the bottom, preferably also by means of heavy material such as pebbles and stones supplied on a horizontal plane.
  • document WO 96/04428 A2 describes a wave- motion reducing system, which is plastic, submerged, foldable and comprises several segments which are provided with longitudinal slots and constitute a series of sequential barriers perpendicularly aligned to the coastline, for applying a "viscous resistance to the water current", thus limiting the wave motion incident to the coast line, wherein the afore said segments are almost vertically held by floating elements placed on one side thereof.
  • the invention of WO 96/04428 A2 has the drawback, among other things, of several segments folding up on each other due to the current which they are subject to.
  • variable tilt platform system being particularly complicated to be implemented and used, having remote management whose purpose is to control the point where the waves should refract, thus allowing the adjustment of the wave motion with the purpose of improving bathing and for recreational and sporting use, such as surfing.
  • This system further requires a complex plumbing fixture for the connection to a remote pumping and control station placed, for example, onshore or on a special vessel.
  • the document EP 3 000 938 Al describes a tapered pipe system, whose tapered pipes in particular have increasing section and are longitudinally open on one side which is used to couple them on the sandy bottom, the system exploiting the Venturi principle and therefore being able to collect and push towards the coast the sandy material on which the pipes are laid by increasing the speed of input water flow.
  • the limitations of a solution such as the one described in EP 3 000 938 Al are apparent from the need to lay the afore said tapered pipes on a sandy bottom and are equally evident when considering that due to excavation, rapid depletion of the underlying sand bed could be caused resulting in the creation of a depression damaging the stability of the system itself.
  • More recent solutions include building panels where artificial posidonia beds are anchored, or placing mesh fabrics suitable for retaining sandy sediments.
  • a further object of the present invention is to provide an erosion-control system of sea coasts without environmental impact, and therefore able to really help to solve problems caused to the ecosystem by coastal erosion.
  • Another object of the present invention is to provide an erosion-control system of sea coasts without landscape impact and, therefore, able to really help to solve problems caused to local economies by coastal erosion.
  • a further object of the present invention is to provide an erosion-control system of sea coasts being flexible both to be implemented and used.
  • Another object of the present invention is to provide an erosion-control system of sea coasts which is easy and inexpensive to be implemented and installed, as well as inexpensive to be maintained.
  • a module for a modular erosion control system of coasts and a modular erosion control system of the coasts comprising the above said module and capable of recovering in situ sandy sediments suspended in the waves.
  • the invention concerns a module for a modular erosion-control system of coasts that comprises a base and a wing coupled to the afore said base in a tilted position with respect to the base, the aforesaid base being provided with coupling means for the combination with the aforesaid wing and with coupling means for the combination with an anchoring system, the aforesaid wing being provided with respective coupling means for the combination with the aforesaid base, the aforesaid base and the aforesaid wing forming a housing adapted for the sediment recovery.
  • Such a kind of module allows a simple, inexpensive and effective modular erosion-control system of coasts to be obtained.
  • the wave carrying sediments can go beyond the wing, break on the foreshore and go back, dropping its sediments in the housing obtained between the base and wing, in particular through the reduction of reflux energy caused by the decay of the wave by means of the barrier created between the afore said base and the afore said wing.
  • This allows sand and other sediments to be readily recovered in situ and therefore provides a simple and economical solution able to carry out effective anti-erosion action without any environmental impact.
  • the invention also relates to a modular system comprising at least one module of the above said type and an anchoring system for fastening the modular system itself.
  • a modular system of this type can be easily positioned and removed, so it can be installed during winter and then removed during spring and summer, e.g. the bathing season. In this way, no landscape impact during the tourist season results from the modular system according to the invention and therefore the same is able to solve the problem associated with local economies.
  • a further advantage of the aforesaid module and hence of the aforesaid modular system is that it can be easily stored when removed (for example during summer) as the modules can be easily stacked and palletized, as well as easily dismantled and therefore they do not require large storage space.
  • the aforesaid modular system is extremely flexible precisely due to its modularity.
  • the modular system according to the present invention is flexible even during use, due to its simplicity of installation and removal. In fact, if an already positioned modular system is to be modified, for example to adapt the same to any change, just few easy steps are required to add or remove modules or to displace the entire modular system.
  • the aforesaid modular system is easy and inexpensive to implement and to install as well as easy and inexpensive to maintain.
  • Another advantage of the module and modular system according to the present invention is to avoid building works that involve the handling of bulk and heavy manufactured products and/or materials, with obvious economic advantages.
  • the aforesaid base is provided with an upper surface and a lower surface and the aforesaid coupling means to couple the base with the wing are obtained at the aforesaid upper surface while the coupling means to couple the base with the anchoring system preferably are obtained at the aforesaid lower surface.
  • the aforesaid coupling means to couple the base with the wing comprise at least one first longitudinal groove adapted to receive the respective coupling means to couple the wing with the base.
  • the aforesaid coupling means to couple the base with the aforesaid anchoring system comprise at least one second longitudinal groove basically parallel to the aforesaid first longitudinal groove.
  • the aforesaid module further comprises at least one fastening element to fasten the base with respect to the anchoring system.
  • the aforesaid fastening element advantageously prevents the module from being separated from the anchorage system accidentally or by prowlers.
  • the aforesaid fastening element comprises at least one section adapted to be inserted in the at least one second longitudinal groove of the module base. It is safe and inexpensive, as well as able to prevent the module base from wear, particularly at grooves, which may be caused by relative movements between the anchorage system and a module.
  • the aforesaid coupling means to couple the base with the anchoring system comprise at least one through hole longitudinally extending in the afore said base. It is also possible to provide second longitudinal grooves having an enlarged bottom, preferably having a first length and a second length substantially orthogonal to each other.
  • the aforesaid coupling means to couple the wing with the base comprise at least one longitudinally extended protuberance adapted to be inserted into the aforesaid at least one first longitudinal groove of the aforesaid base.
  • This coupling system is simple and inexpensive.
  • the aforesaid wing and the aforesaid base form an angle a comprised between about 15° and about 45° . More preferably the aforesaid angle a is of about 30°.
  • the wing allows both the wave to go beyond the wing itself and the reflux sediment to settle in the afore said housing, as will be apparent hereinafter.
  • the wing is free to rotate with respect to the base between a first position, in which it forms an angle a of about 15° with the base, and a second position, in which it forms an angle a of about 45° with the base. In this way the wing can fit the wave motion.
  • the aforesaid base is provided with a cavity adapted to receive weights and/or the sediment accumulation.
  • the aforesaid cavity can contain ballasts. Otherwise, the aforesaid cavity is intended to increase the space for sand accumulation and thus to recover a greater amount of sand.
  • the aforesaid anchoring system comprises at least one cable provided with a given flexibility and resistance, and more preferably further comprises an anchoring device to anchor the aforesaid cable to the ground.
  • the modular system according to the invention is able to adapt to a continuously moving environment, such as the one considered herein .
  • the aforesaid second longitudinal grooves are provided with an enlarged bottom and the above-mentioned fastening elements advantageously are provided in the form of sections, the afore said cables are adapted to be inserted into the second grooves before inserting therein the sections, thereby occupying the aforementioned second length of a respective groove, advantageously the bottom length .
  • the afore said modular system preferably comprises at least one safety device adapted to prevent the longitudinal sliding of the module base with respect to the anchoring system.
  • the afore said safety device is intended to prevent the modules from longitudinally sliding, accidentally or at the hands of prowls, as well to lend greater stability to the system.
  • the aforesaid at least one safety device is coupled to the aforesaid anchoring system, and more preferably it is releasably constrained to the aforesaid two cables.
  • two safety devices of the above said type are provided and arranged opposed with respect to the at least one module of the present modular system.
  • this module can be provided with a height between about 30 cm and about 50 cm, a width between about 40 cm and about 50 cm, and a depth between about 40 cm and about cm 50.
  • FIG. 1 shows a perspective view of a base of a module for a modular erosion-control system of coasts, according to a first embodiment of the invention
  • FIG. 2 shows a perspective view of a wing of a module for a modular erosion-control system of coasts, according to a first embodiment of the invention
  • FIG. 3 shows a perspective view of a module for a modular erosion-control system of coasts comprising the base of figure 1 and the wing of figure 2 ;
  • FIG. 4 is a view of separated parts of the module of figure 3;
  • figure 5 shows a perspective view of a modular erosion-control system of coasts, according to a first embodiment of the invention.
  • FIG. 6 shows a side view of the module of figure 3, thus a phantom view of the modular system of figure 5, in use.
  • the following detailed description refers to a module for a modular erosion-control system of coasts, in particular seacoasts, and to a modular system including that module.
  • a module for a modular erosion-control system of coasts is denoted as a whole with the reference number 1.
  • the module 1 comprises a base 2 and a wing 3.
  • the base 2 is a base 2 and a wing 3.
  • the wing 3 combined therewith is positioned along a tilted direction and is provided with respective coupling means for the combination with the base 2.
  • the base 2 and the wing 3 form a housing 4 adapted to recover suspended sediments in the waves, as will be apparent hereinafter.
  • the base 2 is provided with a top surface adapted to form, together with the wing 3, the housing 4, and with a lower surface adapted to rest on the ground.
  • the coupling means to couple the base 2 with the wing 3 are obtained at the upper surface of the base 2 and the coupling means to couple the base 2 with the anchoring system are obtained at the lower surface of the base 2 .
  • the coupling means to couple the base 2 with the wing 3 comprise a first longitudinal groove 5 adapted to receive respective coupling means to couple the wing 3 with the base 2 .
  • This first longitudinal groove 5 is a groove running through the whole length of the base 2 and advantageously having trapezoidal section.
  • the wing 3 is provided with a longitudinally extended protuberance 7 adapted to be inserted into the first longitudinal groove 5 of the base 2 .
  • a longitudinally extended protuberance 7 adapted to be inserted into the first longitudinal groove 5 of the base 2 .
  • it has trapezoidal section too.
  • the wing 3 can be easily releasably coupled to the base 2 by laterally inserting and sliding the protuberance 7 into the first groove 5 , however this avoids accidental or anyway undesired release between the base and the wing of the module according to the invention.
  • Alternative embodiments can be provided, for example, it would be conceivable to make a plurality of first grooves 5 parallel to each other and a plurality of corresponding protuberances 7 parallel to each other.
  • the section shapes of the protuberances and the first grooves may be different from those described above.
  • the coupling means to couple the base with the wing could be coupling means for an interlocking mechanical combination of a different type with respect to the one described above or, anyway, could be any coupling means of any other known type.
  • the coupling means to couple the base 2 with the anchoring system comprise at least one second longitudinal groove 6 parallel to the first longitudinal groove 5 .
  • the coupling means to couple the base 2 with the anchoring system comprise at least one second longitudinal groove 6 parallel to the first longitudinal groove 5 .
  • the second longitudinal grooves 6 have enlarged bottom comprising a first and a second lengths substantially orthogonal to each other.
  • the coupling means to couple the base with the anchoring system can comprise two longitudinal holes extending throughout the entire length of the base.
  • the base 2 has substantially the shape of a parallelepiped with two opposed side surfaces adapted to be placed side by side to side surfaces of other bases 2 of further modules 1 of a modular system 8 .
  • the remaining two opposite side surfaces are adapted to collide with waves and, for this reason, the corresponding edges 14 which they form with the upper surface of the base 2 are beveled.
  • the module 1 has substantially the shape of an open triangular prism, i.e. without two triangular bases and a side surface. At the line where the base 2 meets the wing 3 , this prism has a vertex 13 and on the opposite side thereof there is an opening in order to allow sediments to enter the housing 4 and settle therein.
  • the module 1 further comprises at least one fastening element to fasten the base 2 with respect to the anchoring system.
  • the afore said fastening element comprises two sections 9 , each adapted to be inserted into a corresponding second longitudinal groove 6 of the base 2 .
  • the sections 9 prevent the base 2 from disengaging from the anchoring system, they do not prevent the base from sliding longitudinally or rotating with respect to them.
  • the sections 9 are preferably longitudinally hollow in order to allow the anchoring system to be inserted between them and the second longitudinal grooves 6 .
  • the second grooves 6 together with the sections 9 , form longitudinal passages for the passage of the anchoring system.
  • the cross section of the profiles 9 has an outer profile basically complementary to the cross section, or part of the cross section, of the second longitudinal grooves 6 , so as to be able to couple therewith.
  • the wing 3 and the base 2 form an angle a of about 30°. However, it may be between about 15° and about 45°.
  • This range is ideal for following through the wave, i.e. for preventing the latter from falling sharply on the wing 3 and, at the same time, for creating a housing 4 suitable for sediment collection.
  • the aforesaid wing is free to rotate with respect to the afore said base between a first position, in which it forms an angle a of about 15° with the base, and a second position, in which it forms an angle a of about 45° with the base.
  • a first position in which it forms an angle a of about 15° with the base
  • a second position in which it forms an angle a of about 45° with the base.
  • the base 2 is also provided with a cavity 10 adapted to receive weights so as to increase the stability of the modules 1 in case of sea storms and/or strong currents. If weights were not needed, this cavity 10 would remain free and thus the volume of the housing 4 would increase, so that greater sediment recovery would be allowed.
  • the base 2, the wing 3 and the profiles 9 are preferably made of plastic material, so as to be lightweight and economical. Advantageously, they are produced by molding of recovery materials.
  • the aforesaid base and/or the aforesaid wing of the module according to the present invention can be provided with small holes adapted not only to further lighten the module but also to prevent excessive forces from being applied to the module itself by possible sea storms.
  • reference numeral 8 overall denotes a modular erosion-control system of coasts according to the present invention.
  • the modular system 8 comprises at least one module 1 and an anchoring system to anchor the modular system 8 itself.
  • the modular system 8 In order for the modular system 8 to be particularly efficient, it is preferred that it comprises a plurality of modules 1 having appropriate size, according to the specific needs.
  • the modules 1 are placed side by side and flexibly held together by the anchoring system.
  • apposite coupling means to couple modules 1 with further modules 1, in particular a module with adjacent modules, can be provided.
  • the anchoring system comprises at least one cable 11 of flexible type, and preferably an anchoring device to anchor the cable 11 itself to the ground.
  • cables 11 adapted to be inserted either into two corresponding longitudinal holes in the base 2 of the module 1, as previously described, or into the two second longitudinal grooves 6 of the base, as shown in figures.
  • FIGS. 4 and 5 show modules 1 also provided with sections 9.
  • the two cables 11 are adapted to be inserted into the two second longitudinal grooves 6 in which they are retained and locked by means of the two respective sections 9, in particular in the second length of a respective second groove, advantageously the length having enlarged bottom.
  • the anchoring system also includes an anchoring device not shown in the examples of the figures, which is intended to secure the cables 11 to the ground and to the bottom, such as the sea bed.
  • These anchoring devices can be of any known type and virtually constitute mooring posts ballasting the modular system according to the present invention .
  • the modular system 8 also comprises two safety devices 12, each adapted to prevent the base 2 of module 1 from longitudinally sliding with respect to the anchoring system.
  • These safety devices 12 comprise metal bars fastened to the cables 11 by means of a mechanical coupling, for example screws.
  • the two safety devices 12 are placed at both ends of the modular system 8 itself, i.e. opposite to each other next to the first and the last modules 1.
  • the modules 1, placed side by side to form the modular system 8 and arranged in a row and with the cables 11 inserted therein, are locked by adjacent modules 1, so that by locking the first one and the last one by the safety devices 12, all the others are longitudinally fastened in place.
  • the cables 11 can be made of any material suitable to be used in marine environment. They may be made of plastic material, or else made up of twisted yarns so as to give certain flexibility to the modular system 8 as a whole.
  • the implementation of an example of the modular system according to the present invention can be outlined as follows: having two cables 11, having a number of modules 1 suitable for covering the coastal area of interest, inserting the cables into the holes or the second longitudinal grooves 6 of the modules 1 (in this latter case, the modules are advantageously and easily placed on the cables from the top thanks to the open grooves provided on the lower surface) , inserting the respective sections 9 in order to lock cables and modules together and inserting two safety devices 12 at the ends of the modular system 8 , positioning the modular system 8 near the foreshore, orienting the modular system 8 parallel to the shoreline with the vertexes 13 facing offshore, e.g. facing the sea, and the housings 4 facing the beach, anchoring the modular system 8 by means of anchoring devices.
  • the modular system 8 is ready to recover sediments being in the waves such as sea waves, as illustrated in the example of Figure 6.
  • the wave is rich in suspended sediments, especially sandy sediments.
  • Such transport is balanced by a return flow that results in transporting energy and mass, i.e. sediment, offshore .
  • the module 1 of the present invention exploits this return flow to recover sediments in the wave. More specifically, the shape of the module 1 of the present invention allows the wave, in the example of Figure 6 denoted by V, to break on the coast and then intercept the sediments denoted by S , of the return flow of the wave by means of the housing 4 , which is able to hold them and keep them from being brought back to the open sea. In other words, the tilt of the wing 3 allows the wave to wash the module 1 and go beyond it, and the housing 4 allows the return flow to drop the sediments.
  • the module 1 acts as a barrier for the return flow of the wave that, losing energy in intercepting the module wing, slows down and drops a larger amount of sediment, as shown in the example in Figure 6 by the arrows indicating the direction of wave motion and by the density of sediments.
  • the sediment is accumulated close to the modular system 8 and then close to the foreshore.
  • the modular system 8 can be removed and applied to another site. Otherwise the sand can be easily recovered and removed, where necessary, thereby reactivating the sedimentation cycle.
  • this module can have height between about 30 cm and about 50 cm, width between about 40 cm and about 50 cm, and depth between about 40 cm and about cm 50.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)

Abstract

La présente invention concerne un module pour un système modulaire de contrôle d'érosion de côtes, le module comprenant une base qui comporte une aile accouplée à celle-ci dans une position inclinée par rapport à celle-ci, la base étant pourvue de moyens d'accouplement pour l'accouplement avec l'aile et de moyens d'accouplement pour l'accouplement avec un système d'ancrage, l'aile étant pourvue de moyens d'accouplement respectifs pour l'accouplement avec la base, la base et l'aile formant un logement adapté pour la récupération de sédiment. La présente invention concerne également un système modulaire formé par lesdits modules.
PCT/IB2017/052682 2016-05-11 2017-05-09 Module pour système modulaire de contrôle d'érosion de côtes et système modulaire comprenant ledit module Ceased WO2017195100A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A003343 2016-05-11
ITUA2016A003343A ITUA20163343A1 (it) 2016-05-11 2016-05-11 Modulo per un sistema modulare antierosione delle coste e sistema modulare comprendente detto modulo

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WO2017195100A1 true WO2017195100A1 (fr) 2017-11-16

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745208A (fr) * 1933-05-06
US3851476A (en) * 1972-11-29 1974-12-03 M Edwards Method and apparatus for breaking waves
EP0449624A1 (fr) * 1990-03-30 1991-10-02 Breakwaters International, Inc. Brise-lames
WO1996004428A2 (fr) * 1994-08-01 1996-02-15 Marine Environmental Solutions, L.L.C. Systeme de prevention d'erosion de sol sous-marin et ensemble de deploiement gonflable
WO2008056304A1 (fr) * 2006-11-06 2008-05-15 Officine Maccaferri S.P.A. Structure de réduction du mouvement des vagues
EP3000938A1 (fr) * 2013-05-22 2016-03-30 U-Li Changwoo Architecture & Engineering Co. Ltd. Unité structurelle de type fixe pour restaurer le sable perdu, structure et procédé de restauration

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745208A (fr) * 1933-05-06
US3851476A (en) * 1972-11-29 1974-12-03 M Edwards Method and apparatus for breaking waves
EP0449624A1 (fr) * 1990-03-30 1991-10-02 Breakwaters International, Inc. Brise-lames
WO1996004428A2 (fr) * 1994-08-01 1996-02-15 Marine Environmental Solutions, L.L.C. Systeme de prevention d'erosion de sol sous-marin et ensemble de deploiement gonflable
WO2008056304A1 (fr) * 2006-11-06 2008-05-15 Officine Maccaferri S.P.A. Structure de réduction du mouvement des vagues
EP3000938A1 (fr) * 2013-05-22 2016-03-30 U-Li Changwoo Architecture & Engineering Co. Ltd. Unité structurelle de type fixe pour restaurer le sable perdu, structure et procédé de restauration

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